文献类型：期刊文献

英文题名：Effect of reflux digestion time on MoO3/ZrO2 catalyst for sulfur-resistant CO methanation

作者：Gu, Jia[1];Xin, Zhong[1,2];Tao, Miao[1];Lv, Yuhao[1];Gao, Wenli[1];Si, Qian[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai, Peoples R China

年份：2019

卷号：241

起止页码：129

外文期刊名：FUEL

收录：;EI(收录号：20185006240582);WOS:【SCI-EXPANDED(收录号:WOS:000458760500013)】；

基金：This research was financially supported by National Natural Science Funds of China (Grant No. U1203293 and 21776091), the Fundamental Research Funds for the Central Universities (22A1817025), China Postdoctoral Science Foundation (2017M611474), the program of Shanghai Subject Chief scientist (Grant No. 10Xd1401500) and the Program of Shanghai Leading Talents (2013).

语种：英文

外文关键词：Sulfur-resistant methanation; Reflux digestion; Zirconia; Mo-based catalysts

摘要：A series of ZrO2 supports were treated by ammonia solution with different reflux digestion time, and loaded 25 wt% MoO3 for sulfur-resistant CO methanation reaction by incipient-wetness impregnation method. The MoO3/ZrO2 catalysts were also characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), infrared spectra of adsorbed pyridine (Py-IR). Compared to the undigested ZrO2, ZrO2 with reflux digestion in ammonia solution could achieve more oxygen vacancies, less Lewis acidic sites, smaller crystalline MoO3 and more amount of active sites. Generally, when the support reflux digested in ammonia solution exceed 12 h, the CO conversion of digested catalysts Mo/A-ZrO2-xh reached 60%, while the CO conversion of undigested catalysts was just 36% at the same reaction condition.